Dell PowerVault DL2000 - Manual (Page 10)

FLEXIBLE SOLUTION OPTIONS THAT FIT ANY REMOTE SITE
Data Replication is the process of copying specified, file‐level content from one
computer, the source computer, to another, the destination computer. This is
achieved through an initial transfer of the specified data, after which the
replicated copy is kept updated in nearly real time with any changes that are made
to the data on the source computer. This replicated copy on the destination
computer provides on‐going, nearly‐real‐time disaster recovery protection for the
source computer, unlike most data protection solutions which require significant
time to perform a complete data protection operation. In addition, data
replication provides a basis for additional data protection activities, such as
Recovery Points (snapshots) and backups of Recovery Points.
Replication Scenarios
Several common scenarios for data replication are illustrated below, but these by
no means illustrate all of the ways in which data replication can be configured.
• Replication from one Source computer to one Destination computer
• Fan‐In: Replication from multiple Source computers to a single
Destination computer
• Fan‐Out: Replication from one Source computer to multiple Destination
computers
One‐to‐One Data Replication
This is the most fundamental configuration for data replication. A single computer
on the LAN or WAN has its data replicated to another computer, either local or
remote. This provides protection of the source computer against catastrophic
failure of the computer itself.
Many‐to‐One Data Replication
In this configuration for data replication, referred to as "Fan‐In", multiple
computers on the LAN or WAN have their data replicated to a single computer,
either local or remote. This provides protection of all of the source computers
against catastrophic failure, while maximizing the use of resources by directing all
the data to a single destination computer.
One‐to‐Many Data Replication
This configuration for data replication, referred to as "Fan‐Out", adds significantly
to the protection afforded to the source computer, because of the redundancy. A
single computer on the LAN or WAN has its data replicated to multiple computers,
any of which can be either local or remote. This provides protection against
catastrophic failure of an entire site, as well as the source computer itself.
BRANCH OFFICE CONSOLIDATION WITH THE DELL POWERVAULT DL2000 –
POWERED BY COMMVAULT SIMPANA REPLICATION